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IMI CCI solves Peruvian gas distribution problems


Division:IMI Critical Engineering

Date:July 2014

In the summer of 2011, Contugas, a Peruvian company that supplies natural gas to the Ica region wanted to expand their residential pipeline system into nearby cities such as Pisco, Ica, Nazca and Marcona; which required the construction of the Humay City Gate station. A system was designed that required 11 pressure regulation systems that would operate from 1,450 to 2,175psig and utilise pipeline gas for actuation.

The IMI CCI team realised that transitioning from the pipeline network to the local distribution system would cause both noise and temperature problems if the kinetic energy was not properly addressed.

The system also needed to accommodate further expansion potential so the valves needed to be capable of handling a very wide range of flow. These design factors led to a split valve approach; one valve would handle the low flow condition and a second valve would address the high flow scenario. Additionally, the very large pressure drop meant a heater was needed for each valve to prevent the actuator from freezing. After many reviews the order was received in June 2012.

Delivery of the system, the configuration of which is easy to maintain and extremely efficient, was made late in 2012. Installation started in September 2013 and operation for part of the system began in February 2014, the last valve was started up in June 2014.